Improvement in wrenches



0. BQNNEVHLLE.

Wrenches. NO. S'. I Patented Nov. 26,1872

erica.

OVIDE BONNEVILLE, OF WORCESTER, MASSACHUSETTS.

' IMPROVEMENT IN WRENCH-IES.

Specification forming part of Letters Patent No. ISSAGQ, dated November26, 1872.

To all whom it may concern:

Be it known that I, Ovmn BONNEVILLE, now residing in the city and countyof Worcester and Commonwealth of Massachusetts, have invented certainnew and useful Improvements in Wrenches for Turning Nuts and for otherpurposes; and I do hereby declare that the following is a full, clear,and exact description of the same, reference being had to theaccompanying drawing forming a part of this specification, and in which-Figure l represents a top or plan view when the jaws are turned up, theface-plate being shown in section for the purpose of indicating morefully its extent 5 and Fig. 2 represents an inner or under side viewofthe face-plate and jaws; and Fig. 3 represents a plan View of thescroll which operates the jaws of the wrench and the ears which projectfrom the body of the wrench, upon which the scroll rests; and Fig. 4represents a side view of the wrench, the handle being shown broken off;and Fig. 5 represents a plan view of the head of the wrench, the handlebeing shown broken oft'.

To enable those skilled in the art to which my invention belongs to makeand use the same, I will proceed to describe the improvement-s more indetail.

In the drawing, the part A is the main body of the wrench, which is castwith a supporting face, upon which the back of the scroll turns, and aseries of cogs, b, on its edge or periphery, (see Figs. 4 and 5 5) itisalso cast with four ears, c, which fit' into spaces in the face-plate B,the two parts being held together by screws d. The part A has a hole inthe center through which passes a tubular projection, c, on the scroll,and over which projection is slipped the neck or ferrule part G,connected with the shank D, to which the' handle E is attached by meansVof a nut, f. After neck O has been slipped upon the tube part c ahand-wheel, F, is placed upon the outer endof the neck, where it isfastened by a set-screw, gl. The jaws G are provided with dovetailedprojections h,"

the under sides of which are constructed with sections of screw-threadsorpproject-ions, 7c, so arranged that they will fit into the scrollshown in Fig. 3. Theface-plate is also made with dovetailed slots, m, toreceive and properly hold the jaws in place either when being adjustedor when in use. In putting the jaws into position their dovetailed endsare first slipped through the center opening H in the face-plate andthen moved back into their respective slots, after which the face-plateis fastened to the body part A so as to bring the projections or threadparts k into the scroll in such a manner as to set all of the jaws atequal distances from the center. Upon the neck of the shank, justforward of the ferrule I, is slipped, before the -handle is attached, athimble-piece, J, fitted to turn freely on the shank-neck. Thim ble J isprovided with ears n, between which apawl or dog, K, is pivoted. Thefront end ot' the dog or pawl catches into the cogs b, while the rearend rests upon the spiral spring o.

Operation.

The operator, by means of the handwheel, turns the scroll, and thusadjusts the jaws to it the nut or other article to be turned, afterwhichhe gives the handle a back-andforth motion, whereby the body part Atogether with the jaws are turned by means of the pawl or dog catchinginto the cogs b. When it is desired to turn the parts in an oppositedirection the rear part of the dog or pawl is pressed in far enough toextend the front end thereof, so that the pawl can be turned past thehand-wheel and into position on the opposite side of the wrench, whenthe same motion of the handle will turn the nut or other article in anopposite direction.

Those skilled in the art to which my invention relates will at onceappreciate the practical utility of my improvements.

The device may be arranged for use in turning drills. In such case itmight be well to make the central tube square or many-sided, and if thejaws are made to bite a pipe or rod the hand-wheel may bemade square ormanysided to receive a wrench for tightening the jaws upon the article.

A small hole is drilled into the shank D on. each side, into which apin, s, on the dog or pawl K, iits, thereby retaining the pawl in properposition to act on the cogs b. f

Having described my improved wrench, wh at I claim therein as new and of-my invention, and desire to secure by Letters Patent, is

1. The combination, with the cogged or notched supporting-body A andslotted faceplate, of the threaded jaws and. operatingpawl and scroll,substantially as and for the purposes set forth.

2. The combination, with the projecting tubular part e of the scroll Band shank of the wrench, of the hand-Wheel F, neck or fel-rule C,thimble J, and operatingpawl and its spring, substantially as and forthe purposes set forth.

3. The combination, with the shank-neck of the Wrench, of thimble J,-ears n, pawl or dog K, spiral spring o, and holdin g-pin "s,substantially as and for the purposes set forth.

44.. The combination, with the shank-neck of the Wrench, of thethiznble-piece J and operating dog` or pawl K, substantially as and forthe purposes set forth.

p OVIDE BONNEVILLE.

Witnesses JEROME A. KnvsMAN, FRED. L. GOULDING.

